<xsl:template match="cdlist ">
<xsl:for-each select="cd [filed = 'C05 World']">
<tr>
...

• Almost certainly more efficient
  • Parser can optimise the selection
  • Nodeset being worked on is smaller
• May not give same results though
  • position() with <xsl:if> gives position in list of CDs
  • position() with predicate gives position in list of World CDs